Question

An electric geyser rated 1500 W, 250 V is connected to a 250 V line mains.
A. Calculate the electric current drawn by it,
B. energy consumed by it in 50 hours and
C. energy consumed if each unit cost Rs. 6.00.

Answer 1

Hint: An electric geyser is working over energy consumed such that the rate would be determined by heat produced by the electricity. Now we need to use the formula of power in terms of voltage and the current formula such that we can calculate the energy by using the power formula. Hence we calculate the energy consumed in the unit cost.

Complete step by step solution:
 From the given data
P = 1500 W
V = 250V
A) We calculate the electric current by using the power formula
$P = VI$
Where P is the power
V is the potential difference
$\
  I = \dfrac{P}{V} \\
\implies I = \dfrac{{1500}}{{250}} \\
\implies I = 6A \\
\ $
B) Now by using the formula we calculate the electric energy consumed by geyser in 50 hr
E = Power × time
$\
  E = P \times t \\
\implies E = 1500 \times 50 \\
\implies E = 75000Wh \\
\ $
One kilowatt is equal to 1000 watt
$E = 75kwh$

C) Now we will calculate the energy consumed for each unit cost.
Given:
Cost of one unit = 6.00 Cost
For Cost of 75 units = 75 × 6.00
Therefore the cost of Rs. 450.00

Note:
The energy consumption refers to all types of energies used to manufacture something and inhabit a building.
Also used to perform an action. Commonly, the total energy consumption can be measured by looking at how much energy is produced in the process of consumption.